Base of a key



FIG. 1 is a perspective view of a base of a key in accordance with the new design;

FIG. 2 is a front elevation view of the base of a key shown in FIG. 1, the rear elevation view being identical;

FIG. 3 is a right-side elevation view of the base of a key shown in FIG. 1, the left-side being a mirror image thereof;

FIG. 4 is top plan view of the base of a key shown in FIG. 1; and,

FIG. 5 is bottom plan view of the base of a key shown in FIG. 1.

The broken lines in the drawings represent portions of the base of a key that do not form part of the claimed design. 

CLAIM The ornamental design for a base of a key, as shown and described. 